Stdlib.Stream(3o) OCaml library Stdlib.Stream(3o)
NAME
Stdlib.Stream - no description
Module
Module Stdlib.Stream
Documentation
Module Stream
: (module Stdlib__Stream)
type 'a t
The type of streams holding values of type 'a .
exception Failure
Raised by parsers when none of the first components of the stream pat-
terns is accepted.
exception Error of string
Raised by parsers when the first component of a stream pattern is ac-
cepted, but one of the following components is rejected.
Stream builders
val from : (int -> 'a option) -> 'a t
Stream.from f returns a stream built from the function f . To create a
new stream element, the function f is called with the current stream
count. The user function f must return either Some <value> for a value
or None to specify the end of the stream.
Do note that the indices passed to f may not start at 0 in the general
case. For example, [< '0; '1; Stream.from f >] would call f the first
time with count 2 .
val of_list : 'a list -> 'a t
Return the stream holding the elements of the list in the same order.
val of_string : string -> char t
Return the stream of the characters of the string parameter.
val of_bytes : bytes -> char t
Return the stream of the characters of the bytes parameter.
Since 4.02.0
val of_channel : in_channel -> char t
Return the stream of the characters read from the input channel.
Stream iterator
val iter : ('a -> unit) -> 'a t -> unit
Stream.iter f s scans the whole stream s, applying function f in turn
to each stream element encountered.
Predefined parsers
val next : 'a t -> 'a
Return the first element of the stream and remove it from the stream.
Raises Stream.Failure if the stream is empty.
val empty : 'a t -> unit
Return () if the stream is empty, else raise Stream.Failure .
Useful functions
val peek : 'a t -> 'a option
Return Some of "the first element" of the stream, or None if the stream
is empty.
val junk : 'a t -> unit
Remove the first element of the stream, possibly unfreezing it before.
val count : 'a t -> int
Return the current count of the stream elements, i.e. the number of the
stream elements discarded.
val npeek : int -> 'a t -> 'a list
npeek n returns the list of the n first elements of the stream, or all
its remaining elements if less than n elements are available.
OCamldoc 2023-02-12 Stdlib.Stream(3o)
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